Rotary engine.



- No. 884,852. PATENTEDAPR.14, 1808.

, P. Q'. POULsoN.

` ROTARY ENGINE.

PPPP IQAfrIoN FILED s221221. '1807.

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INVENTOH er@ I Ano/Mfrs l PAUL oLUFF PoULsoN, oF BRIGHAM, UTAH.

' y' ROTARY ENGINE.

Specification of Letters Patent.

. Patented April 14, 1908.

Application led Septemberi21, 1907. Serial No. 393,999.

To all' 'whom it may concern:

Beit known thatI, PAUL OLUFF PoULsoN,

a citizen of the United States, and a resident. of ABrigham-city, in the county of Boxelder and State of Utah, have invented a new and Improved Rotary Engine, of which the following is a full, clear, and exact description.

This invention relates to rotary engines, and the object of the invention is to produce' an engine of this class which is simple in construction, and which will operate e'liiciently and economically in steam consumption.

A further object of the invention is to rovide a construction whereby the steam W ich is projected upon the rotary member will be thrown back intoA steam pockets in the cas- 4 ing, so that the steam in these ockets can and combination of parts to be more fully.,Y described hereinafter and particularly set flow later onto the rotary mem erso as to accelerate its velocity.

.The invention consists in the construction forth in the claims.

Reference is to be had to the accompany-I,

ing drawings forming a part of this specication, in which similar characters of referencel indicate corresponding parts in all the figures.

Figure 1 is a vertical transverse sectionl through an engine constructed according tomy invention; Fig. 2 is a vertical longitudinal section of theengine; Fig. 3 is a vertical section similar to Fig. 1, but taken at another point,.the wheel or rotor being shown partly in'elevation and partly in section; Fig. .4 'is a section on the line u1 4: of Fig. 1,:and`

passing through the steam ports and pockets; and Fig. 5 is a sectionon the line 5 5 of Fig. 1 and illustrating the arrangement of the eX- haust.

Referring more particularly to the parts, 1 represents the case or frame of the engine,

`the u per portion of which is formed into a barre or cylinder 2. Within this barrel a piston drum or 4rotor 3 is rotatably mounted, the saine being carried .upon a suitable shaft 4 mounted inthe case as indicated. The

rality of buckets 5. v Each of4 these buc ets comprises a central passage 6 and side passages 7. disposed equidistant therefrom, said side passages being connected with cach other and with the middle passage by a cross assage'S. TheY cross Ipassage 8 is disposed orwardly with respect to the direction of rotation, andthe passage 6 comes to the surface of the drum at a port 9 the passages 7 come l -to the surface in ports 10. These ports 9 lan d 10 are in alinement with each other as shown.- In addition to this, there is a for- Wardly disposed port 11 which is in alinement `With the port 9 and which communicates Withits'forward end as shown. At diametrically opposite lpoints on the cylinder inlet ports 12 and 13 are 'rovided, theinlet port 12 being dis osed a ove, as shown. These ports 12 an 13 are inclined nearly tangenytially vto'the drum and project inthe direction of rotation; that is, the steam flowing in through the ports would flow inf the general direction in Which'the rotation of the adjacent surface ofthe drum takes place. The ports 12 and 13 are formed into nipples to relive steam. On each side of the inlet ports 12 and 13, steam pockets 15 are formed, and these are of cylindrical form and extend substantially parallel With the inlet ports 12 and 13. This arrangement is clearlyillus'trated in the upper part of Fig. 2. The inlet ports 12 and 13 are in alinement With the ports 9 vand 11 of the steam drum, and thesteam pockets 15 vare in alinement with the ports 10. Inaddition to the steam pockets 15 which are arranged at each side of the inletv ports 12 and 13, similarpockets. 16 are arranged in airs throughout the entire circumference ofp the cylinder. These pockets 16 are also in alinement with the ports 10. In addition to this, just to the rear of theinlet ports 12 and 13 with respect to the direction of rotation, lexhaust ports 17 are provided, to which suitable exhaust pipe connections y18 are attached. The live steam is admitted through the ports 12 and 13., and as the ports 11 pass under them, the steam projects itself through the ports 11 into the cross passages 8, in which it flows'laterally and then rearwardly in the passa res 7 In thisy way an impulse is given in a orward direction to the' rotating drum. As the buckets advance, the ports 10 pass'under the ockets-l or 1 6, and a portion ofthe steam w ich the contaln ceive pipe connections 14 which bring 'in the flows rearwardly into these poc ets. In

this Way, after the engine has been running a short time, the pockets 15 and 16 become charged With steamunder iressure. sthe buckets pass under the poc ets, this pressure exerts itself upon the buckets, and increases the velocity of rotation of the drum. The pockets Which are nearest to the inlet ports l will have the highest 4intermediate pressure,

1 thereof, said While the pockets nearest to the exhaust will have a lower pressure. In this Way the action of the engine may be considered to resemble that of a compound engine, as the pressure of the active steam drops by stages.

I provide seven of the buckets 5 inthe rotor 'or drum spaced equidistant, and six of the reaction ports or pockets 16 in the cylinder, also spaced equidistant. By this arrangement the buckets come successively in different phases or positions with relation to the pockets, and the impelling action of the 'steam becomes practically continuous. In

addition to this, the admission ports are placed diametrically opposite to eachother so that it is impossible for the rotor to stop on a dead center.

v Having thus described 'my invention, I claim as new and desire to secure by Letters Patent:

1. A rotary engine having -a cylinder with alining inlet ports formed in the Wall thereof, a drum'rotatably mounted in said cylinder and having buckets formed near the surface buckets having ports alining with said inlet ports, and laterally disposed passages With side ports opening upon the surface of said drum, and a plurahty of steam vpockets formed around the Wall of said cylinder in alinement with said last ports, and ada ted to receive steam or give steam to sai buckets.

2. A rotary engine having a cylinder with diametrically o )positely dis osed inlet ports inclined toward a tangentia line', a drum rotatably mounted in said cylinder and having buckets in the outer wall thereof, said buckets having central passages disposed in alinement With said inlet ports, and side assagcs descending laterally and rearwarr ly, said -side passages having ports coming out upon the surface of said drum, said cylmdcr having a plurality of inclined pockets in alinement with said last ports and adapted to roceive steam or give steam thereto.

In testimony whereof I have signed my name to this specification in the presence oi' two subscribing Witnesses.

PAUL OLUFF POUI'JSON. `Vlitnesses:

JAMES P. THOMPSON, CHRIS FREEGE. 

